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Transport and Retention of Nanomaterial in Porous Media: Experimental and Modeling Investigation.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Transport and Retention of Nanomaterial in Porous Media: Experimental and Modeling Investigation./
作者:	Hasan, Sazadul.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	167 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-03, Section: B.
Contained By:	Dissertations Abstracts International83-03B.
標題:	Water resources management. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28715182
ISBN:	9798538137039

Transport and Retention of Nanomaterial in Porous Media: Experimental and Modeling Investigation.
Hasan, Sazadul.

Transport and Retention of Nanomaterial in Porous Media: Experimental and Modeling Investigation. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 167 p.

Source: Dissertations Abstracts International, Volume: 83-03, Section: B.

Thesis (Ph.D.)--South Dakota School of Mines and Technology, 2021.

This item must not be sold to any third party vendors.

Investigations on environmental pollution indicate exposures to unsafe water over the past decade. Chemicals released to the environment including heavy metals and toxic nanomaterials have been reported to pollute water resources. Pollution of water resources is becoming a concern particularly with increasing urbanization and development and use of new materials. This dissertation explores the transport and retention behavior of heavy metals and two-dimensional graphene oxide (GO) in biochar-based media. It highlights the potential of biochar (BC) and biochar-supported nanoscale zerovalent iron (BC-nZVI) to retain GO and heavy metals under subsurface environments.Chapter 2 evaluates the performance of BC and BC-nZVI in removing heavy metals from synthetic stormwater. A series of batch experiments on adsorption of metals demonstrated that removal efficiency in BC-nZVI was increased by 43% and 57% compared to BC for individual metal solution and 50% and 42% for mixed metal solution of Cd and Zn, respectively. Media characterizations revealed the surface complexation and chemical reduction were responsible for enhanced metal removal in BC-nZVI. Column studies showed removal efficiencies of BC-nZVI increased by 115% and 123% for Cd2+ and Zn2+, respectively compared to BC. Chapter 3 investigates the transport and retention behavior of GO in sand, BC, and BC-nZVI using mass balance approaches and column dissections in a series of model fixed-bed columns as a function of ionic strength (IS) and flowrate. The BC column displayed 3.6-fold higher GO retention compared to the quartz sand (control). The BC-nZVI (5:1, w/w) column retained 2.6-fold higher amounts of GO compared with bare BC. Furthermore, the performance of BC-nZVI increased with decreasing values of IS, attributed to the attachment of GO to nZVI where nZVI was partially dissolved by the presence of higher chloride ion at high IS. A better GO retention (86%) was observed in BC at higher IS where the GO was primarily retained due to the higher aggregation via straining. Chapter 4 discusses an application of a numerical model using an inverse modeling approach to predict attachment coefficient (Ka) and maximum solid-phase retention capacity (Smax) for GO in sand, BC, and BC-nZVI and includes scenarios analysis for further understanding of interaction of IS, treatment depth and influent concentration. The Langmuirian dynamics with site-blocking function effectively described experimental GO breakthrough curves (R2~0.70-0.99). BC and BC-nZVI exhibited significantly higher Ka values compared to sand attributable to high porosity, roughness, and surface chemical properties. The models predicted an increasing trend in Ka (0.065 to 0.615 min-1) in BC with increasing IS (0.1 to 10 mM), while Ka values decreased (2.26 to 0.349 min-1) for BC-nZVI. A consistent increasing trend in Smax was observed for both BC and BC-nZVI with increasing IS. Scenario analysis showed a complete GO breakthrough occurred in a 5 cm media after 350 and 465 days for BC and BC-nZVI, respectively at 10 mM IS and influent concentration of 0.1 mg·L-1.

ISBN: 9798538137039Subjects--Topical Terms:

794747
Water resources management.
Subjects--Index Terms:

Transport

Transport and Retention of Nanomaterial in Porous Media: Experimental and Modeling Investigation.
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100 1 $a Hasan, Sazadul. $3 3685323
245 1 0 $a Transport and Retention of Nanomaterial in Porous Media: Experimental and Modeling Investigation.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 167 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-03, Section: B.
500 $a Advisor: Geza, Mengistu.
502 $a Thesis (Ph.D.)--South Dakota School of Mines and Technology, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Investigations on environmental pollution indicate exposures to unsafe water over the past decade. Chemicals released to the environment including heavy metals and toxic nanomaterials have been reported to pollute water resources. Pollution of water resources is becoming a concern particularly with increasing urbanization and development and use of new materials. This dissertation explores the transport and retention behavior of heavy metals and two-dimensional graphene oxide (GO) in biochar-based media. It highlights the potential of biochar (BC) and biochar-supported nanoscale zerovalent iron (BC-nZVI) to retain GO and heavy metals under subsurface environments.Chapter 2 evaluates the performance of BC and BC-nZVI in removing heavy metals from synthetic stormwater. A series of batch experiments on adsorption of metals demonstrated that removal efficiency in BC-nZVI was increased by 43% and 57% compared to BC for individual metal solution and 50% and 42% for mixed metal solution of Cd and Zn, respectively. Media characterizations revealed the surface complexation and chemical reduction were responsible for enhanced metal removal in BC-nZVI. Column studies showed removal efficiencies of BC-nZVI increased by 115% and 123% for Cd2+ and Zn2+, respectively compared to BC. Chapter 3 investigates the transport and retention behavior of GO in sand, BC, and BC-nZVI using mass balance approaches and column dissections in a series of model fixed-bed columns as a function of ionic strength (IS) and flowrate. The BC column displayed 3.6-fold higher GO retention compared to the quartz sand (control). The BC-nZVI (5:1, w/w) column retained 2.6-fold higher amounts of GO compared with bare BC. Furthermore, the performance of BC-nZVI increased with decreasing values of IS, attributed to the attachment of GO to nZVI where nZVI was partially dissolved by the presence of higher chloride ion at high IS. A better GO retention (86%) was observed in BC at higher IS where the GO was primarily retained due to the higher aggregation via straining. Chapter 4 discusses an application of a numerical model using an inverse modeling approach to predict attachment coefficient (Ka) and maximum solid-phase retention capacity (Smax) for GO in sand, BC, and BC-nZVI and includes scenarios analysis for further understanding of interaction of IS, treatment depth and influent concentration. The Langmuirian dynamics with site-blocking function effectively described experimental GO breakthrough curves (R2~0.70-0.99). BC and BC-nZVI exhibited significantly higher Ka values compared to sand attributable to high porosity, roughness, and surface chemical properties. The models predicted an increasing trend in Ka (0.065 to 0.615 min-1) in BC with increasing IS (0.1 to 10 mM), while Ka values decreased (2.26 to 0.349 min-1) for BC-nZVI. A consistent increasing trend in Smax was observed for both BC and BC-nZVI with increasing IS. Scenario analysis showed a complete GO breakthrough occurred in a 5 cm media after 350 and 465 days for BC and BC-nZVI, respectively at 10 mM IS and influent concentration of 0.1 mg·L-1.
590 $a School code: 0204.
650 4 $a Water resources management. $3 794747
650 4 $a Environmental engineering. $3 548583
650 4 $a Nanoscience. $3 587832
650 4 $a Laboratories. $3 531588
650 4 $a Pollutants. $3 551065
650 4 $a Bioaccumulation. $3 1071297
650 4 $a Food contamination & poisoning. $3 3562624
650 4 $a Water treatment. $3 3683746
650 4 $a Stormwater management. $3 3685325
650 4 $a Adsorption. $3 580046
650 4 $a Dissertations & theses. $3 3560115
650 4 $a Nanomaterials. $3 3558221
650 4 $a Drinking water. $3 605014
650 4 $a Graphene. $3 1569149
650 4 $a Scanning electron microscopy. $3 551366
650 4 $a Best management practices. $3 3685326
650 4 $a Environmental conditions. $3 3550086
650 4 $a Experiments. $3 525909
650 4 $a Heavy metals. $3 552237
650 4 $a Retention. $3 2137396
650 4 $a Urban areas. $3 3546012
650 4 $a Food chains. $3 3680771
650 4 $a Soil contamination. $3 3557940
653 $a Transport
653 $a Retention
653 $a Nanomaterial
653 $a Porous media
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710 2 $a South Dakota School of Mines and Technology. $b Civil and Environmental Engineering. $3 3685324
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791 $a Ph.D.
792 $a 2021
793 $a English
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